EP0468435B1 - Dentalkeramikzusammensetzung für Titanium-Prothesen - Google Patents

Dentalkeramikzusammensetzung für Titanium-Prothesen Download PDF

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Publication number
EP0468435B1
EP0468435B1 EP91112312A EP91112312A EP0468435B1 EP 0468435 B1 EP0468435 B1 EP 0468435B1 EP 91112312 A EP91112312 A EP 91112312A EP 91112312 A EP91112312 A EP 91112312A EP 0468435 B1 EP0468435 B1 EP 0468435B1
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EP
European Patent Office
Prior art keywords
titanium
dental
ceramic material
dental ceramic
suspension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP91112312A
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English (en)
French (fr)
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EP0468435A2 (de
EP0468435A3 (en
Inventor
Klaus Weissbach
Klaus Krumbholz
Ralf Janda
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Dentsply GmbH
Original Assignee
DENTSLPLY GmbH
Dentsply GmbH
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Application filed by DENTSLPLY GmbH, Dentsply GmbH filed Critical DENTSLPLY GmbH
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Publication of EP0468435A3 publication Critical patent/EP0468435A3/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/0007—Compositions for glass with special properties for biologically-compatible glass
    • C03C4/0021—Compositions for glass with special properties for biologically-compatible glass for dental use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/15—Compositions characterised by their physical properties
    • A61K6/16—Refractive index
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/15—Compositions characterised by their physical properties
    • A61K6/17—Particle size
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/20—Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/70—Preparations for dentistry comprising inorganic additives
    • A61K6/78—Pigments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/807—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising magnesium oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/816—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising titanium oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/84—Preparations for artificial teeth, for filling teeth or for capping teeth comprising metals or alloys
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders

Definitions

  • This invention relates to a dental ceramic composition that can be fused to dental prostheses including crowns, bridges, or prostheses parts made of titanium or titanium alloys.
  • the response is a strong and permanent bond between the dental ceramic and the titanium or titanium alloys.
  • Chem. Abs., Vol 111 (1989) 45348w discloses a ceramic composition to be fused for dental prostheses made of titanium or titanium alloys, whereby the dental composition has a thermal expansion of 7.7 x 10 -6 /K.
  • Patent Abstracts of Japan, Vol. 13 No. 523 (C-657) (3871) 1989 discloses a glare composition for artificial teeth having a coefficient of thermal expansion in the range of 40-100 x 10 -7 /K (30-380°C).
  • the veneering or overlaying of prostheses is a well known and widely practiced dental technique.
  • the metals used are almost exclusively gold alloys, palladium alloys, chromium-cobalt alloys or chromium-nickel alloys.
  • more and more efforts are being taken to produce dental metal objects or restoratives out of titanium or titanium alloys.
  • the reasons for the increased interest in titanium and titanium alloys include their bio-compatibility with the soft and hard tissues of the oral cavity and the development of new casting methods and techniques.
  • titanium and titanium alloys can be used in melting and casting procedures in a vacuum, in melting and casting procedures in an inert atmosphere, in computer-assisted milling procedures and with spark erosion techniques. Additional advantages of titanium and its alloys include low specific weight, good erosion resistance and low price compared to that for a precious or semi-precious metal.
  • dental ceramic is defined as meaning any ceramic having a glassy and/or crystalline phase.
  • the titanium or titanium alloys are preferably veneered with multilayers and/or multishades of dental ceramics in order to achieve natural appearing tooth colors and stains.
  • the dental ceramic may be mixed with suitable pigments, e.g.
  • the primary object of the present invention to prepare a dental ceramic material suitable for high bonding strength fusion to titanium or titanium alloys.
  • Another object of the present invention is to prepare a dental ceramic that will give a bond strength of at least 20 MPa when bonded to titanium or titanium alloys.
  • a dental ceramic composition is provided according to Claim 1 that can be fused with high bonding strength to dental prostheses including crowns, bridges, or prostheses parts made of titanium or titanium alloys.
  • the ceramic has between 8 and 17 weight-percent of boron expressed as B 2 O 3 and this specific range for B 2 O 3 in the ceramic is directly responsible for the high bonding strength.
  • the ceramic material may be prepared as a dental powder or as a suspension or paste and may contain pigments or opacifiers to give natural appearing tooth colors and stains in dental restoratives when bonded to substrates of titanium or titanium alloys.
  • Mabie et al., U.S. Patent 4,431,451 teach dental materials having frits with B 2 O 3 concentration ranges of 0-10% (weight percent).
  • the present invention in one of its primary aspects, provides a dental ceramic material according to Claim 1 having between 8 and 17 weight-percent B 2 O 3 that can be fused to titanium or titanium alloys with high bonding strength. This specific content range for B 2 O 3 in the ceramic is directly responsible for the high bonding strength attained.
  • the present invention is disclosed in a dental ceramic of the following composition: COMPOUND WEIGHT-PERCENT SiO 2 54-64 Al 2 O 3 5-12 B 2 O 3 8-17 Li 2 O 0-6 Na 2 O 3-10 K 2 O 0-8 MgO 0-2 CaO 0-6 BaO 0-2
  • opacifiers for example, opacifiers, pigments, other elements and/or impurities, may also be present.
  • a preferred embodiment is disclosed in a dental ceramic of the following composition: COMPOUND WEIGHT-PERCENT SiO 2 58-64 Al 2 O 3 6-12 B 2 O 3 10-13 Li 2 O 2-5 Na 2 O 4-7 K 2 O 4-8 CaO 3-5
  • the preferred embodiment is especially suited for a high bonding strength with titanium.
  • the thermal expansion of titanium and ceramic are particularly well adjusted to each other in this embodiment.
  • the preferred firing temperature is preferably between 740° and 850°C, more preferably between 770° and 800°C, and most preferably at 790°C.
  • the dental ceramic may be mixed with suitable pigments e.g. (Ti, Cr, Sb)O 2 , (Ti, Cr, W)O 2 , (Zn, Cr, Fe, Al) x O y , (Zn, Cr, Fe, Al, Sn) x O y , (Zr, Si, Pr) x O y , (Sn, Sb, V) x O y , and opacifiers, e.g., TiO 2 , SnO 2 , ZrO 2 , ZrSiO 4 , in order to imitate the natural tooth shades.
  • suitable pigments e.g. (Ti, Cr, Sb)O 2 , (Ti, Cr, W)O 2 , (Zn, Cr, Fe, Al) x O y , (Zn, Cr, Fe, Al, Sn) x O y , (Zr, Si, Pr) x O y , (Sn, Sb, V) x
  • a preferred embodiment of the dental ceramic containing pigments and opacifiers is the following composition: COMPOUND WEIGHT-PERCENT SiO 2 54-64 Al 2 O 3 5-12 B 2 O 3 8-17 Li 2 O 0-6 Na 2 O 3-10 K 2 O 0-8 MgO 0-2 CaO 0-6 BaO 0-2 TiO 2 0-10 SnO 2 0-10 ZrO 2 0-10 Pigments 0-10
  • SnO 2 at 5% is used as an opacifier along with 2% pigments.
  • the dental ceramic can be prepared as a powder or as a suspension or paste in suitable organic and/or inorganic liquids. If the suspension or paste contains polymerizable compounds (monomers or prepolymers) the suspension or paste can be self-cured or cured by visible light. When a suspension or paste is fired, any organic parts should be completely burned out in usual practice.
  • one use of the dental ceramic comprises mixing the dental ceramic powder with an aqueous vehicle to provide a slurry of ceramic, supplying the slurry of ceramic to the metal substrate to build-up the desired shape and thickness, and firing the ceramic by procedures well known in the art.
  • An alternative use of the dental ceramic comprises mixing the dental ceramic powder with a curable resin modeling liquid vehicle to prepare a suspension or spreadable paste, applying the paste to a dental restorative to provide a coating of ceramic material thereon, curing the resin to effectively fix the coating in its desired shape and thickness, and firing the dental restorative and coating to fuse the ceramic material.
  • a method of preparation of a curable resin modeling liquid and the use of the liquid with a dental ceramic are presented in U.S. Patent Application Serial No. 07/157,206.
  • the polymerizable resin modeling liquid used may be a one-component or multi-component light curable resin or a self-cured (chemically-cured) multi-component resin.
  • the dental restorative is fired at temperatures effective to vaporize the volatile components of the resin without burning, charring or boiling and then to fuse the ceramic material.
  • a dental ceramic was prepared by mixing the following raw materials in a share mixer: RAW MATERIAL SUPPLIER WEIGHT-PERCENT Feldspar 1 Dentsply International, York, PA 29 Quartz Flour Bremthaler Quarzwerke, Usingen 35 KNO 3 Riedel-de Haen, Seelze (Art. No. 12651) 6 Na 2 CO 3 Emesco, Frankfurt 5 Li 2 CO 3 Merck, Darmstadt (Art. No. 5670) 6 CaCO 3 Schfer Kreice 6 Na 2 B 4 O 7 .1OH 2 O Brenntag AG, Mühlheim/Ruhr 6 B 2 O 3 Riedel-de Haen, Seelze (Art. No. 31145) 7 1 dental grade potash feldspar as described in U.S. Patent No. 4,604,366.
  • the resulting dental ceramic powder had the following composition: COMPOUND WEIGHT-PERCENT SiO 2 63.3 Al 2 O 3 6.4 B 2 O 3 10.8 Li 2 O 2.8 Na 2 O 5.7 K 2 O 7.0 CaO 4.0
  • the dental ceramic powder was then mixed with water to provide a ceramic slurry.
  • the slurry was applied to a metal substrate with a brush and the substrate and slurry fired in a furnace at 790°C for 3 minutes. Of the 3 minutes in the furnace, 2.6 minutes were under vacuum ( ⁇ 50 mbar).
  • a dental ceramic was prepared as in Example 1 by mixing the following raw materials: RAW MATERIAL SUPPLIER WEIGHT-PERCENT Feldspar K 31 Mandt, Gmbh & Co. KG, Brake 51.0 Quartz Flour Bremthaler Quarzwerke, Usingen 20.0 K 2 CO 3 Merck, Darmstadt (Art. No. 4924) 7.3 Li 2 CO 3 Merck, Darmstadt (Art. No. 5670) 4.4 CaCO 3 Merck, Darmstadt (Art. No. 2069) 6.3 B 2 O 3 Riedel-de Haen, Seelze (Art. No. 31145) 11.0
  • the resulting dental ceramic powder had the following composition: COMPOUND WEIGHT-PERCENT SiO 2 60.4 Al 2 O 3 10.2 B 2 O 3 11.9 Li 2 O 1.9 Na 2 O 5.8 K 2 O 5.8 CaO 4.0
  • the dental ceramic was subjected to a firing temperature of between 800° and 840°C and found to have a coefficient of thermal expansion of 8.0 x 10 -6 /K (25-500°C) and a resultant bond strength of 24 ⁇ 2 MPa.
  • the bond strength was determined according to the Schmitz/Schulmeyer method (K. H. Schmitz and H. Schulmeyer, Determination of bonding strength of dental-metal ceramic bonding systems, Dental-Labor , 23 :1416-1420, 1975).
  • a dental ceramic containing an opacifier was prepared as in Example 1 by mixing the following raw materials: RAW MATERIAL SUPPLIER WEIGHT-PERCENT Feldspar Dentsply International, York, PA 47.0 Quartz Flour Bremthaler Quarzwerke, Usingen 22.0 Na 2 CO 3 Emesco, Frankfurt 4.0 Li 2 CO 3 Merck, Darmstadt (Art. No. 5670) 7.0 CaCO 3 Merck, Darmstadt (Art. No. 2069) 6.0 TiO 2 , RN56 Kronos Titan GmbH, Leverkusen 2.0 B 2 O 3 Riedel-de Haen, Seelze (Art. No. 31145) 6.0 Na 2 B 4 O 7 .10H 2 O Brenntag AG, Mühlheim/Rohr 6.0
  • the resulting dental ceramic containing an opacifier had the following composition: COMPOUND WEIGHT-PERCENT SiO 2 60.0 Al 2 O 3 10.0 B 2 O 3 9.3 TiO 2 2.3 Li 2 O 3.2 Na 2 O 5.5 K 2 O 5.9 CaO 3.9
  • the ceramic was subjected to a firing temperature of between 800° and 840°C and found to have a coefficient of thermal expansion of 8.0 x 10 -6 /K (25-500°C).
  • the resultant bond strength was determined according to the Schmitz/Schulmeyer method to be 24 ⁇ 2 MPa.
  • Samples I-IV are ceramic materials of varying B 2 O 3 content.
  • Duceratin and Titanbond are commercially available ceramics for bonding to titanium.
  • Duceratin is the product of Ducera Dental GmbH, Rodheimer Str. 7, D-6365 Rosbach v.d.H., West Germany and Titanbond is the product of Asami Tanaka Dental Enterprises Europe GmbH, Kaiser-Friedrich-Promenade 26, D-6380 Bad Homburg, v.d.H., West Germany.
  • the bonding strength was determined according to the Schmitz/Schulmeyer method.
  • Samples II and III are preferred embodiments. Sample II is the same as Example 2. Samples I and IV which are respectively below and above the claimed B 2 O 3 content demonstrate lower bonding strength. TABLE I Ti I II III IV Duceratin Titanbond Bonding strength [MPa] - 14 ⁇ 2 24 ⁇ 2 20 ⁇ 2 17 ⁇ 2 15 ⁇ 2 12 ⁇ 2 Thermal expansion* [ 10 -6 /K] 9.3 8.7 8.0 8.2 8.6 - - Fire temperature [°C] - 810 800-840 820 790 750 800 SiO 2 62.2 60.4 59.4 52.3 Al 2 O 3 10.4 10.2 10.1 9.6 B 2 O 3 5.5 11.9 12.3 17.4 TiO 2 2.2 - - - Li 2 O 1.9 1.9 1.8 1.9 Na 2 O 7.0 5.8 6.5 7.7 K 2 O 6.2 5.8 6.0 5.7 CaO 4.6 4.0 3.9 2.7 BaO - - - 2.7 * 25-500°C
  • Example 1 Another dental ceramic containing an opacifier was prepared as in Example 1 by mixing the following raw materials: RAW MATERIAL SUPPLIER WEIGHT-PERCENT Feldspar Dentsply International, York, PA 28.0 Quartz Flour Bremthaler Quarzwerke, Usingen 34.0 Na 2 CO 3 Emesco, Frankfurt 5.0 KNO 3 Riedel-de Haen, Seelze (Art. No. 12651) 6.0 Li 2 CO 3 Merck, Darmstadt (Art. No. 5670) 6.0 CaCO 3 Merck, Darmstadt (Art. No. 2069) 6.0 B 2 O 3 Riedel-de Haen, Seelze (Art. No. 31145) 7.0 Na 2 B 4 O 7 .10H 2 O Brenntag AG, Mühlheim/Ruhr 6.0 TiO 2 , RN56 Kronos Titan GmbH, Leverkusen 2.0
  • the resulting dental ceramic containing an opacifier had the following composition: COMPOUND WEIGHT-PERCENT SiO 2 61.6 Al 2 O 3 6.4 K 2 O 7.0 Na 2 O 5.6 Li 2 O 2.8 CaO 3.9 B 2 O 3 10.5 TiO 2 2.2
  • the ceramic was subjected to a firing temperature of 800°C and had a coefficient of thermal expansion of 8.6 x 10 -6 /K (25-500°C).
  • the resultant bond strength was determined to be 22 ⁇ 2 MPa according to the Schmitz/Schulmeyer method.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Dental Preparations (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Claims (8)

  1. Dentales keramisches Material, das an Zahnprothesen, die aus Titan oder Titanlegierungen hergestellt sind, geschmolzen werden kann, umfassend: VERBINDUNG GEWICHTSPROZENT SiO2 54-64 Al2O3 5-12 B2O3 8-17 Li2O 0-6 Na2O 3-10 K2O 0-8 MgO 0-2 CaO 0-6 BaO 0-2
       wobei das Material einen thermischen Ausdehnungskoeffizienten von 7,8 x 10-6/K bis 9,0 x 10-6/K (25-500°C) aufweist und an Titan oder Titanlegierungen bei Temperaturen zwischen 740° und 850°C geschmolzen werden kann.
  2. Dentales keramisches Material nach Anspruch 1, wobei das B2O3 zwischen 10-13 Gewichtsprozent beträgt.
  3. Dentales keramisches Material nach Anspruch 1, das außerdem polymerisierbare Verbindungen, Trübungsmittel und/oder Pigmente umfaßt, und wobei das dentale keramische Material eine Pulversuspension oder eine verstreichbare Paste darstellt, die selbsthärtbar oder durch sichtbares Licht härtbar ist.
  4. Dentales keramisches Material nach Anspruch 2, das außerdem organische Verbindungen umfaßt, die vollständig nach Brennen des dentalen keramischen Materials an das Titan oder die Titanlegierungen aufgebraucht sind.
  5. Verfahren zur Herstellung von Zahnprothesen aus Titan oder Titanlegierungen, die mit einem dentalen keramischen Material verbunden sind, umfassend die Schritte
    a) Herstellen einer Suspension oder verstreichbaren Paste aus dem dentalen keramischen Material, wobei die dentale Keramik eine wie in Anspruch 1 definierte Zusammensetzung aufweist,
    b) Auftragen der Suspension oder verstreichbaren Paste auf eine geformte Struktur,
    c) Brennen der Suspension oder verstreichbaren Paste.
  6. Verfahren nach Anspruch 5, wobei das B2O3 zwischen 10-13 Gewichtsprozent ausmacht.
  7. Verfahren nach Anspruch 5, das außerdem polymerisierbare Verbindungen, Trübungsmittel und/oder Pigmente umfaßt, und wobei das dentale keramische Material eine Pulversuspension oder eine verstreichbare Paste darstellt, die selbsthärtbar oder durch sichtbares Licht härtbar ist.
  8. Verfahren nach Anspruch 5, wobei die organischen Verbindungen vollständig nach Brennen des dentalen keramischen Materials an das Titan oder die Titanlegierungen aufgebraucht sind und wobei das Material an Titan oder Titanlegierungen bei Temperaturen zwischen 740° und 850°C geschmolzen wird.
EP91112312A 1990-07-24 1991-07-23 Dentalkeramikzusammensetzung für Titanium-Prothesen Revoked EP0468435B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55726090A 1990-07-24 1990-07-24
US557260 1990-07-24

Publications (3)

Publication Number Publication Date
EP0468435A2 EP0468435A2 (de) 1992-01-29
EP0468435A3 EP0468435A3 (en) 1992-10-28
EP0468435B1 true EP0468435B1 (de) 1996-10-16

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ID=24224686

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EP91112312A Revoked EP0468435B1 (de) 1990-07-24 1991-07-23 Dentalkeramikzusammensetzung für Titanium-Prothesen

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EP (1) EP0468435B1 (de)
JP (1) JP3450014B2 (de)
AT (1) ATE144129T1 (de)
AU (1) AU648807B2 (de)
CA (1) CA2046685A1 (de)
DE (1) DE69122686T2 (de)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102007024556A1 (de) 2007-05-22 2008-11-27 Rettig, Karsten, Dr. Glasurzusammensetzung als Haftvermittler dentaler Sinterkeramiken auf Titan und dessen Legierungen
DE102010012453A1 (de) 2009-03-25 2010-10-14 Rettig, Karsten, Dr. Verfahren zur Steigerung des Haftverbundes von dentalkeramischen Restaurationen auf Titan und dessen Legierungen

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JPH05228161A (ja) * 1992-02-19 1993-09-07 Olympus Optical Co Ltd 歯科補綴物
DE4428839C2 (de) 1994-08-01 1997-01-23 Ivoclar Ag Alkali-Zink-Silicat-Glaskeramiken und -Gläser und Verfahren zur Herstellung der Glaskeramiken
DE4443173C2 (de) * 1994-12-05 1997-04-10 Schott Glaswerke Bariumfreies Dentalglas mit guter Röntgenabsorption
US6353039B1 (en) * 1997-12-15 2002-03-05 Ivoclar Ag Polymerizable composite material
ES2915599T3 (es) * 2019-05-03 2022-06-23 Vita Zahnfabrik H Rauter Gmbh & Co Kg Vitrocerámica de bajo punto de fusión

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US4159358A (en) * 1977-05-19 1979-06-26 Board Of Regents, State Of Florida Method of bonding a bioglass to metal
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JPH0622569B2 (ja) * 1987-02-28 1994-03-30 株式会社神戸製鋼所 人体硬質材料用陶材組成物
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JPH01212248A (ja) * 1988-02-20 1989-08-25 Nippon Electric Glass Co Ltd 人工歯用釉薬組成物

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007024556A1 (de) 2007-05-22 2008-11-27 Rettig, Karsten, Dr. Glasurzusammensetzung als Haftvermittler dentaler Sinterkeramiken auf Titan und dessen Legierungen
DE102010012453A1 (de) 2009-03-25 2010-10-14 Rettig, Karsten, Dr. Verfahren zur Steigerung des Haftverbundes von dentalkeramischen Restaurationen auf Titan und dessen Legierungen

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Publication number Publication date
AU8037291A (en) 1992-01-30
AU648807B2 (en) 1994-05-05
EP0468435A2 (de) 1992-01-29
EP0468435A3 (en) 1992-10-28
DE69122686T2 (de) 1997-02-27
ATE144129T1 (de) 1996-11-15
DE69122686D1 (de) 1996-11-21
CA2046685A1 (en) 1992-01-25
JPH04234304A (ja) 1992-08-24
JP3450014B2 (ja) 2003-09-22

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